Firefighters responded this afternoon to a serious vehicle collision in Ellicott City. At 16:48 units were alerted to respond to Eastbound I-70 near the Route 40 split for an accident with unknown injuries, which was quickly upgraded with subsequent reports of one person trapped. Paramedic 35 arrived to find a single vehicle with a single patient who was heavily trapped in the vehicle and was pronounced Priority 4. I-70 remained closed for several hours while the Maryland State Police Crash Team investigated. Units cleared at 17:59.